package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.DishDTO;
import com.sky.dto.DishPageQueryDTO;
import com.sky.entity.Dish;
import com.sky.entity.DishFlavor;
import com.sky.exception.DeletionNotAllowedException;
import com.sky.mapper.DishFlavorMapper;
import com.sky.mapper.DishMapper;
import com.sky.mapper.SetmealDishMapper;
import com.sky.result.PageResult;
import com.sky.service.DishService;
import com.sky.vo.DishVO;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.ArrayList;
import java.util.List;

/**
 * @author ssm
 * @version v1.0
 * @ClassName DishServiceImpl
 * @Date: 2025/6/12 20:07
 * @Description: 描述
 */
@Service
@Slf4j
public class DishServiceImpl implements DishService {

    @Autowired
    private DishMapper dishMapper;

    /**
     * 口味
     */
    @Autowired
    private DishFlavorMapper dishFlavorMapper;

    /**
     * 套餐
     */
    @Autowired
    private SetmealDishMapper setmealDishMapper;

    /**
     * 新增菜品
     *
     * @param dishDTO
     */
    @Override
    @Transactional
    public void increase(DishDTO dishDTO) {
        Dish dish = new Dish();
        BeanUtils.copyProperties(dishDTO, dish);
        log.info("新增菜品:" + dishDTO);
        //1、新增菜品
        dishMapper.insterse(dish);
        Long id = dish.getId();
        //2、新增口味
        List<DishFlavor> flavors = dishDTO.getFlavors();
        if (flavors!=null && flavors.size()>0){
            flavors.forEach(e -> {
                e.setDishId(id);
            });
            dishFlavorMapper.insterse(flavors);
        }


    }

    /**
     * 菜品分页查询
     *
     * @param dishPageQueryDTO
     * @return
     */
    @Override
    public PageResult pageQuer(DishPageQueryDTO dishPageQueryDTO) {
        PageHelper.startPage(dishPageQueryDTO.getPage(), dishPageQueryDTO.getPageSize());
        Page<DishVO> page = dishMapper.pageQuer(dishPageQueryDTO);
        log.info("菜品分页查询数据+" + dishPageQueryDTO);
        return new PageResult(page.getTotal(), page.getResult());
    }

    /**
     * 删除菜品
     *
     * @param ids
     */
    @Override
    @Transactional
    public void deleteBatch(List<Long> ids) {
        //判断当前菜品是否能够删除--是否存在起售中的菜品
        for (Long id : ids) {
            Dish dish = dishMapper.getById(id);
            if (dish.getStatus() == StatusConstant.ENABLE) {
                throw new DeletionNotAllowedException(MessageConstant.DISH_ON_SALE);
            }
        }
        //判断当前菜品是否能够删除--是否被套餐关联
        List<Long> setmealIds = setmealDishMapper.getSetmealIdsByDishIds(ids);
        if (setmealIds != null && setmealIds.size() > 0) {
            throw new DeletionNotAllowedException(MessageConstant.DISH_BE_RELATED_BY_SETMEAL);
        }
        //删除菜品表中的菜品数据
        dishMapper.deleteById(ids);
        //删除菜品关联的口味数据
        dishFlavorMapper.deleteDishId(ids);


    }

    /**
     * 查询菜品详细信息
     * @param id
     * @return
     */
    @Override
    public DishVO dishWithFlavor(Long id) {
        //菜单数据
        Dish dish = dishMapper.getById(id);
        //菜单口味
       List<DishFlavor> dishFlavor= dishFlavorMapper.getByDishId(id);
        DishVO dishVO = new DishVO();
        BeanUtils.copyProperties(dish,dishVO);
        dishVO.setFlavors(dishFlavor);
        return dishVO;
    }

    /**
     * 修改菜品数据
     * @param dishDTO
     */
    @Override
    public void updateWithFlavor(DishDTO dishDTO) {
        //修改菜品数据
        Dish dish =new Dish();
        BeanUtils.copyProperties(dishDTO,dish);
        dishMapper.updateDish(dish);
        //修改口味数据
        List<Long> list=new ArrayList<>();
        list.add(dishDTO.getId());
        //删除口味
        dishFlavorMapper.deleteDishId(list);
        //新增口味
        List<DishFlavor> flavors = dishDTO.getFlavors();
        if (flavors!=null && flavors.size()>0){
            flavors.forEach(e -> {
                e.setDishId(dishDTO.getId());
            });
            dishFlavorMapper.insterse(flavors);
        }
    }

    /**
     * 根据分类id查询菜品
     * @param categoryId
     * @return
     */
    public List<Dish> list(Long categoryId) {
        Dish dish = Dish.builder()
                .categoryId(categoryId)
                .status(StatusConstant.ENABLE)
                .build();
        return dishMapper.list(dish);
    }


    /**
    * 实现方法
    * */
    @Override
        public List<DishVO> listWithFlavor(Dish dish) {
            List<Dish> dishList = dishMapper.list(dish);

            List<DishVO> dishVOList = new ArrayList<>();

            for (Dish d : dishList) {
                DishVO dishVO = new DishVO();
                BeanUtils.copyProperties(d,dishVO);

                //根据菜品id查询对应的口味
                List<DishFlavor> flavors = dishFlavorMapper.getByDishId(d.getId());

                dishVO.setFlavors(flavors);
                dishVOList.add(dishVO);
            }

            return dishVOList;
        }
}
